Saturday, January 16, 2010

What is Pacemaker ?

What is a pacemaker?

Pacemaker is a complex electronic device that does two things: 1) analyze the function of the electrical system of his heart. 2) if necessary, sends young people, just as electrical signals from the heart to correct some deficiencies in the electrical system of the heart.
The electrical system of the heart is regulated by heart rate (for example, it sets the pace) and coordinates the contractions of the heart muscle, so that the heart is beating effectively.
Anomalies of the heart's electrical system is manifested cardiac arrhythmias. Extremely slow arrhythmia called bradycardia, arrhythmia, and abnormally fast is called tachycardia.
Most pacemakers, designed to correct bradycardia (slow arrhythmia.) Diseases of the heart can cause a slow pace of weakness, drowsiness, vertigo, dizziness, loss of consciousness or even death. Pacemakers, properly used, which effectively eliminates these symptoms.

How do pacemakers work?
Pacemakers consist of two main parts: the generator and the leads.
The generator is actually a small computer, sealed - with the battery to run - a titan in the container. Most modern pacemaker generators are about the size of 50 cents, and about three times thicker. Stimulants battery generator today from 5 to 8 years.

Lead is a flexible insulated wire. One end is connected to the generator and the other end passed through a vein in the heart. Most pacemakers today use two drivers - one placed in the right atrium and the other in the right ventricle. How it works. Pacemaker leads, even to detect the electrical activity of the heart (right atrium and right ventricle) and transfer this information to the pacemaker generator. The event - the computer - the analysis of electrical signals to the heart, and uses this information to decide where and when in PACE. If the momentum is too slow, the generator sends a weak electrical signal to the heart, stimulates the heart muscle contract. (This is called rhythm.)

Pacemakers with two leads not only to maintain the heart rate to drop too low, they also maintain good coordination between the atria and ventricles (atrium and ventricle, irritation in the order).

Therefore, the pacemaker did not want to take jobs in the heart - the heart still beating his own - but only pacemakers to regulate the timing of the heartbeat.

What are “rate-responsive” pacemakers?

In the early pacemakers are designed to work in a given heart rate. So if your pulse rate fell below its own pre-specified number (say, 70 beats per minute) from the beginning to go with that speed. Today, most pacemakers have a way to determine the momentum must be from moment to moment, and a fixed rate of stimulation to the optimal pulse. These pacemakers, said that the response rate.
Rate-responsive pacemakers may use different technologies to determine the maximum heart rate, and two, in particular, were very useful. One such technology is the activity of sensors, sensors, motion detection of the body. Building on the patient on (so arguments GOES), the faster the heart rate should be. Another breath sensor, which measures the breathing of the patient. Breathing fast, faster heart rate should be. Some of these technologies allows the pacemaker is adapted to simulate the time change, when the heart rate in patients with normal function of the heart electrical system.

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